a system that detects submarines (under water boats) a sonar
Asdic
ASDIC stands for Anti-Submarine Detection Investigation Committee. It was a British military project during World War II that developed sonar technology for detecting submarines.
There is nothing.
When you go to the bathroom. ^ Dont waste people's time. Do you mean Intrusion Detection System? If so, an Intrusion Detection System, or IDS for short, is a physical device, or a piece of software that monitors networks or systems for malicious activities.
Tactical Biological Standoff Detection System
The existence of submarines forced other countries to develop anti-submarine weapons and detection systems.
There is nothing.
There is nothing.
Long range detection and assessment system
Deep ocean pressures are to great for submarines. They do not need to go deep anyway, just to avoid detection by the enemy.
Fiber Optic Intelligence Detection System.
A vacuum